Path Selection Apparatus, Path Selection Method and Program

2. The path selection apparatus according to claim 1, wherein a value obtained for the first node is greater than or equal to one, the value being a remainder obtained by dividing (a) a sum of (i) a total number of sensor reports created by the first node and (ii) a total number of sensor reports of lower nodes transferred by the first node by (b) a rate at which sensor reports are aggregated into a packet.

3. The path selection apparatus according to claim 1, wherein the node movement unit is configured to set an upper limit for a number of times a same vertex node of a same subtree in the sensor tree is selected when node movements are repeatedly performed in the sensor tree.

4. The path selection apparatus according to claim 1, wherein the node movement unit sets an upper limit for a number of times a same node in the sensor tree is moved when node movements are repeatedly performed in the sensor tree.

9. The path selection method according to claim 5 further comprising: setting an upper limit for a number of times a same node in the sensor tree is moved when node movements are repeatedly performed in the sensor tree.